Jack



T. HILL EI" AL July 11, 1933.

JACK

Filed July 30, 1932 2 Sheets-Sheet l T. HILL El' AL July 11, 1933.

JACK

2 Sheets-Sheet 2 Filed July 50, 1952 Qual/#Umar Truman h'ZZ www cel

Patented July 11, 1933 TRUMAN HILL AND ERVIN n. ziMMneMeNQorrr-nnr,ILLINOIS,

JACK y Application :led July 30,

This invention relates to a jack and is more particularly concerned Witha jack that is utilized for removing a retaining ring of the typecommonly used for holding a tire upon the rim of an automobile Wheel.

Considerable difficulty has been heretofore experienced in removing atire retaining ring from the rim of an automobile Wheel, particularlyWhen the ring has rusted onto the rim. @ft times the retainingring-cannot be conveniently and readily removed` from the rim because ofinjury to the wheel such asmay directly cause deformation of the ring orrim or both.

The present invention therefore, contemplates the provision'of a meansthat can be operatively associated With an automobile Wheel forexpeditiously and conveniently removing a retaining ring from the rim ofsaid wheel with a minimum amount of time and effort.

Another of the objects of the present' invention is to provide a j acl;of the type defined which is constructed of comparatively fen7 anddurable parts that are rigidly related When assembled so as to withstandconsiderable abuse while being employed in the capacity for which it Wasdevised.

Other objects and advantages will herein- 0 after appear from thefollowing detailed description of a preferred embodiment ofl the deviceofthis invention, reference being had 'to the accompanying drawings.-

'in the drawings: Figure 1 is a side'elevational View of such embodimentpartially broken avray'and in section and illustrating the same asapplied to an automobile wheel of disc Wheel type;

Figure Q'is a front elevational view of the jack illustrated in l3`igure1 and taken substantially alongthe line 2f-2 of Figure 1; Figure 3 is aside elevational view substantially corresponding to Figure 2 butillustrating vthe preferred embodiment of the present device as appliedto another type of automobile Wheel;

Figure 4 is asectional view taken'substantially along the line' 4 4 inFigure Y1; Figure 5 is a vertical longitudinal section- 1932.V SerialkNo. 626,402.

al view taken substantially of the line 5-*5 inrFigure 4f;

Figure 6 is a plan sectional viev7 taken substantially'along the line 66 in Figure 1; and n Figure T is a fragmentary sideelevational view ofamodiied form of the invention.

Referring now more particularly to Fig- 1 and 2, the jaclndesignatedinits en'- tiret, Vby numeral 1, is associated with an automobile wheel2 of the disc Wheel type having a rim 3 the reception of a tire 4i, thelatter-being held upon the rim 3 in its vnormal operating relationthereto by meansof a retaining ring 5. Obviously, the Wheel structureillustrated forms nofpart of the present invention but'merely exempliesone type of a standard automobile Wheel of lnoivndconstruction. The jack1, inthe main, comprises a frameincluding a member 6, terminating at oneend in a socket 7, anda shanlior extension member v8 fitting into socket7. The f :member-'6 and its `socket 'I are preferably `of squarecross-section as is the lextension or shank '8, the latter snuglyfitting into the socket 7 and abutting the shoulder 9, andbeing securedWithin the socket by any suitable means. In the present constructionmember 6 is 'preferably in the form. of a channeljbar .provided With aslot 10 and havingsnitable ears 12 disposed adjacentthereto for suitablyreceiving'a securing means comprising'a bolt 13 carrying'athumb nut 14.-By 'operating kthe nut 14, the shank 8 is securely clamped withiuthesocket portion 7 of member 6, A fl' bolt or plunger 15, -in the form ofa rack bar and preferably of square 'cross-section, is slidably carriedby member-6 for end\vise Vmovement relative thereto, the extended end ofthe plunger being provided With a hard 'Sio metal tip or abutment member16.v The tip 16 is preferably offset from the central plane of the jackto effect a proper amount of clearance between the jack and the Wheel,and al- Athough the tip is illustrated as iixedly secured All'95 to theplunger 15 it may, if desired, be adjustably'secured thereto. Variousmechanisms may be employed for actuating the plunger 15 endwise of the'j ack but it is preferableto utilize the meansillus-"KOG along theplane trated in Figures l and 2. In the preferred construction one faceor portion of member 6 is cut away to expose the plunger or bolt 15which is provided with teeth 17 that are accessible through the opening1S so formed. Member 6 is further provided with eXtensions or ears 19for suitably supporting pivotal means such as the pin or shaft 20, thelatter rotatably supporting a handle or levei Lever 22 is suitablyprovided with teeth 23 which are adapted for cooperation with teeth 17through the opening 1S provided in member 6. By operating the lever 22,the bolt or plunger 15 is actuated eiidwise of the member 6. Moreoverthe teeth 23 are so arranged with respect to lever 22 that, if thelatter is rotated upwardly into vertical position, the last tooth 23a-will clear the teeth 17 of the rack or plunger 15 whereby the latter ismovable independentlyY of the teeth Yon lever 22.

The shank or extension S is provided with an adjustable stop or foot 24,the latter providing means for positioning the jack in abuttingengagement with a fixed portion of the wheel. The stop or foot 24 ispreferably constructed in the manner best illustrated in Figures l, 4,and 5. The foot is so shaped that it normally has three walls thereofdisposed adjacent the Shank, the fourth wall 25 being inclined outwardlyand away from the shank. Suitable means, such as a spring 26, may beconnected with wall 25 to engage the shank for maintaining the foot 24in its normal position relative to the shank as viewed in Figure 1. Foot24C when in the normal position referred to, is locked against movementendwise of shankS by means of a stud or pin 27 which is insertable intoany one of a number of openings 2S provided in shank 8, the pin beingmaintained within its selected opening through the action of spring 26.To adjust foot 24C lengthwise of shank 8, it is moved into the positionillustrated in Figure 5 against ythe action' of spring 26, vvvlierebythepin 27 is drawn out-of the particular opening 2S wherein it was located.

In Figure 1 the foot is so adjusted with reference to shank 8 as toengage the edge of the Wheel at the hub opening 29 in wheel 2, the footpreferably being serrated as at 30 to insure la better grip of the footupon that poi'- tion of the wheel which it engages. To facilitate therotation or rocking of foot 24 relative to shank 8, the upper portion 3lof wall 25 is preferably curved so as to be disposed substantiallytangentially to the adjacent wall of the shank when it is in normaloperating position. A portion of the wall that is oppositely disposedfrom wall 25 is also beveled or curved as at 32 to further facilitatetherocking of the foot when adjusting the same lengthwise of shank v8.-Obviously, any force acting upwardly against the serrated portion of thefoot will tend to rotate the same counterclockwise as viewed in Figure1, about a virtual pivotal point located substantially at the pointwhere the curved portion 31 of wall 25 contacts shank 8, thereby iirmlyforcing pin 27 into the selected opening 28 wherein the pin is disposedand positively maintaining the same in that position. Therefore,although spring 26 does function to hold the pin in cooper-atingengagement within an opening in shank 8, the spring is primarilyemployed for preventing the foot or stop from dropping ofi of the shankor moving relative thereto when applying the jack to a wheel or whenotherwise moving the jack from place to place. This greatly enhances theutility of the jack and adds lto its convenience in handling as well asexpediting the operation of the jack when removing a retaining ring froma wheel. I

The jack is readily applicable to a wheel 'to function in the capacityfor which it was devised. By raising the handle or lever 22 into aposition which the opeiator will best know from experience to besuiiicient to cause, when operated, ample movement of the plunger toremove the retaining ring, and by adjusting the foot into abuttingengagement with some iXed portion of the wheel from which the retainingring is to be removed, the jack will then be set for operation. A slightmovement of the handle or lever will bring the tip 16 into engagementwith the retaining ring, further movement of the lever causing the ringtomove radially of the wheel rim and out of its operative or retainingposition therewith. The jack can be applied to any vform of wheel, andas hereinbefore explained,

in Figure 1 it is associated with a dise wheel. In Figure 3 the samejack is illustrated as as sociated with a spoked wheel to demonstrateyits general utility.

The tip'element 16 of pressure applying bar l5, when 1n contact withretaining ring 5,

provides a fulcruin about which the jack may be swung to bring i'ootmember 25 into close contact with the wheel disc or other cooperatingabutment. This provides a compensating adjustment which assures propercontact of the foot member with the abutment, after the foot member hasbeen adjusted on the shank into approximate position for such contact.In this manner, necessity for precision in adjusting the foot member onthe shank is eliminated, which facilitates and expedites use of thejack, and maximum outward movement of or dog 36 pivotally connected at37to a. handle or lever 22a. The pawl is therefore supported for rota ionabout its pivot 37 and for bodily rotation with said lever about therlatters supporting pin or shaft a. With this construction, the bolt orplunger 15a is manually movable upwardly independently of the lever andits associated pawl. This facilitates adjusting the jack upon a wheelfor operation, since the footcan be conveniently placed into abuttingengagement with some fixed portion oi the wheel, and the plunger maythereafter be manually raised until the hardened metal tip 16a isbrought into contact with the retaining ring of said wheel. The lattermanual act is accomplished without imparting any movement to the leverwhich can be raised to any position con- 'veniently adapted for itsoperative downstroke, or having been raised, can then rbe immediatelyoperated downwardly. In

either case, the pawl will move the plunger upwardly by means of itscontact-with the teeth of the latter. Any suitable iinger hold means maybe connected with the plunger lfor the lpurpose of manually raising thesame independently of the position or the lever. In this instance, thetip 16ay is provided with an extension member or linger hold 3S for thatpurpose. Moreover, the pawl is so positioned and arranged, that uponraising the lever into substantially vertical position, the pawl will beentirely disengaged from the plunger ratchet teeth to allow the plungerto drop freely through gravity. A

Obviously, there are other mechanisms that ma f be emoloved for oJeratin@ the 'ack and 5 i e l for obtaining the adjustments thereof whenapplying the same to the wheel, and changes y may be made intheexemplified construction j without departing from the essence and scopeof the present invention. Therefore, we do j not intend to be limited tothe jack illustrated yan operating lever mounted on'the frame atL oneside thereof, operating connections be.

tween the lever and the bar, a foot member adjustable lengthwise of theframe and projecting from the opposite side of and substantially atright angles to said frame, andmeans for securing the foot memberinadjustment on the frame.

2. In Vcombination in a jack for removing a tire retaining ring from therim of an automobile wheel, a Jframe, a foot member adjustablelengthwise of the frame and projecting from said frame lsubstantially atright angles thereto, means for securing the foot member in adjustmenton the frame and for holdingit against movement lengthwise of the frameby pressure incident to theuse of the-jack, a pressure applying barvtelescoping the frame and provided at its outer end with a tip elementdisposed to contact the retaining ring,

and means for forcing the bar outwardly of the frame, the tip elementwhenin contact with the ring providing, a ulcrum about which the j aclmay be swung to bring the foot member into close contact with acooperating abutment. n

In witness whereof, we hereunto subscribe our names this 29 day of June,1932.

TRUMAN HILL. ERVIN H. ZIMMERMAN.

